THREE (3) examples of mechanical filter.
filter sock, drum filter, screen filter, sand filter, granular filter, bead filter.
Give THREE (3) functions of the tool.
Increase oxygen, reduce supersaturated carbon dioxide, reduce supersaturated nitrogen gas
How this tool operates?
Water falls under gravity and air is mixed into it from the surrounding atmosphere
Function of mechanical filter.
Remove solid wastes in water.
THREE (3) components of RAS.
Mechanical filter, Biofilter, Aerator
Name the filter.
Sand filter
How the tool operates?
Water splash to the air, large surface area, gas-water exchange.
Why coral stone is added into biofilter?
As buffering materials (carbonate and bicarbonate ions)
Name the filter.
Drum filter
TWO materials used as diffusers.
Tube with small holes, porous ceramic stones, modified pvc pipe.
What is foam factionation or protein skimming?
To remove fine and dissolved solids in RAS
THREE (3) categories of solid wastes.
Setteable, suspended and dissolved
The best time to operate aerator. Reason.
Night. Low DO.
How this tool operates?
Introduce air bubbles from a depth to achieve oxygen transfer and mixing.
what is backwash?
Clean the filter by reversing the flow of water through it.
Does sand filter same as bead filter?
No. Bead filter has spherical plastic pellets (polyethylene (PE) / polypropylene (PP)
Name the filter.
Filter sock